$("#sheng").combobox({
			onSelect:function(record){
				$("#shi").combobox("reload","address/selectByParent?parentId="+record.id+"");
			}
			
		})
		$("#shi").combobox({
			onSelect:function(record){
				$("#qu").combobox("reload","address/selectByParent?parentId="+record.id+"")
		}
})